Engine Oil Press No. 1 and No. 2

TB 9-4920-361-24

(4) Set GAS GEN SPEED NO. 1 HI/LO switch to LO. Frequency counter will

indicate 0.

(5) On model 476-853, set GAS GEN SPEED NO. 1 CAL/NOR switch to NOR and

adjust GAS GEN SPEED NO. 1 variable control from fully ccw to fully cw. Frequency

counter indication will vary from 0 to 2400 Hz minimum.

(6) On model 476-854, set GAS GEN SPEED NO. 1 CAL/NOR switch to NOR.

Frequency counter will indicate between 2,375 and 2,480 Hz.

(7) On model 476-854, adjust GAS GEN SPEED NO. 1 variable control fully ccw.

Frequency counter will indicate 0 Hz.

(8) Set ON-OFF-SIM ONLY switch to OFF.

(9) Disconnect leads from connector No. 1 pins c (HI) and d (LO) and connect to

connector No. 2 pins c (HI) and d (LO).

(10) Repeat (2) through (8) above, except use GAS GEN SPEED NO. 2 controls.

b. Adjustments. No adjustments can be made.

17. Engine Oil Press No. 1 and No. 2

a. Performance Check

(1) Connect equipment as shown in figure 3, connection A for connector No. 1. Do

not disconnect equipment connected in figure 1.

Figure 3. Engine oil pressure - equipment setup.

(2) Set TI ENGINE OIL PRESS NO. 1 CAL/NOR switch to CAL and HI/LO

switch to LO.

(3) Set calibrator for a 6 V, 400 Hz output.

12 CHANGE 2